source: doc/theses/andrew_beach_MMath/code/throw-empty.cpp @ 8a1d95af

ADTast-experimentalenumforall-pointer-decayjacob/cs343-translationpthread-emulationqualifiedEnum
Last change on this file since 8a1d95af was 54651005, checked in by Andrew Beach <ajbeach@…>, 3 years ago

Added asm statements to the exception benchmarks to prevent unwanted optimizations.

  • Property mode set to 100644
File size: 971 bytes
Line 
1// Throw Across Empty Function
2#include <chrono>
3#include <cstdlib>
4#include <exception>
5#include <iostream>
6
7using namespace std::chrono;
8
9struct EmptyException : public std::exception {};
10
11void unwind_empty(unsigned int frames) {
12        if (frames) {
13                unwind_empty(frames - 1);
14        } else {
15                throw (EmptyException){};
16        }
17}
18
19int main(int argc, char * argv[]) {
20        unsigned int times = 1;
21        unsigned int total_frames = 1;
22        if (1 < argc) {
23                times = strtol(argv[1], nullptr, 10);
24        }
25        if (2 < argc) {
26                total_frames = strtol(argv[2], nullptr, 10);
27        }
28
29        time_point<steady_clock> start_time = steady_clock::now();
30        for (unsigned int count = 0 ; count < times ; ++count) {
31                try {
32                        unwind_empty(total_frames);
33                } catch (EmptyException &) {
34                        asm volatile ("# catch block");
35                }
36        }
37        time_point<steady_clock> end_time = steady_clock::now();
38        nanoseconds duration = duration_cast<nanoseconds>(end_time - start_time);
39        std::cout << "Run-Time (ns): " << duration.count() << std::endl;
40}
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